Roll forging and forming



A. L. WARNER. ROLL FOBGING AND FORMING. APPLICATION FILED SEPT.2I, l9! 1.

1,325,768. Patentd Dec. 23,1919.

4 SHEETS-SHEET I.

A. L. WARNER; ROLL. FORGING AND FORMING. APPLICATION FILED SEPT.2I, 1917.

4 SHEETS-SHEET? i l K 'lllllllllllll IIMIIIIIIIIIIIHIH fizz/62:52 946 27144 722;. 25/7716 Patented Dec. 23, 1919.

A. L. WARNER.

ROLL FORGING AND FORMING. APPLICATION FILED sEPT.21. 1912.

1,325,768 Patnted Dec. 23,1919. 7 4snzs1s-smzn 3 2/ J5 9 w 5Q y F "l" f +3) I! I 3.9

viii/lab? .5. Warner A. L. WARN EH. ,ROLLFORGING Am) FORM|NG.' APPLICATION FILED SEPT.2I, 1911.

Patented Dec. 23, 1919.

4 SHEETS-SHEET 4.

[Eu/672257" Ji fiuwul. Warner all nnrrnn srnrns PATENT onnicn.

ARTHUR L. WARNER, OF MOLINE, ILLINOIS.

norm rename AND FORMING.

Specification of Letters Patent.

Patented Dec. 23,1919.

Application filed September 21, 1917. Serial No. 192,438.

moved to and from the associate rolls or:

roll, whereby to form or forge objects, placed therebetween, to the desired shape.

Uther objects of my invention are to provide an adjustable stop to limit the ap proach of the rolls thereby to control their operativeness upon the object being forged and means, manually controlled, to separate the rolls to remove the finished object and to place therebetween stock for forming a new object.

Other and further objects of my invention will readily become apparent to persons skilled in the art, from a consideration of the following description when taken in conjunction with the drawings, wherein Figure 1 is a side elevation of one form of the machine, showing one bodily movable compressing roll, in its lowermost position with the controlling valve placed for the introduction of the motive fluid below the piston to lift the compressing roll.

Fig. 2 is an end elevation of Fig. 1.

Fig. 3 is a section taken on line 3-3 of Fig. 1.

Fig. 4 is a section taken on line i-4l of Fig. 2.

Fig. 5 is a section, taken on line 55 of Fig. 4:.

Fig. 6 is a section, taken through the valve and communicating conduits.

Fig. 7 is a perspective view of one form of object or article that may advantageously be produced in my machine.

Fig. 8 is a sectionalview of an adjustable positive stop for the bodily movable roll.

In all the views the same reference characters are employed to indicate similar parts. a j

My machine may be employed to rapidly produce. articles, composed of malleable or, ductile metal, such as soft steel, iron, or the like, which have heretofore been swaged or forged in dies in drop hammers or presses.

By the practice of my invention the arj jcle is rolled round, smooth and true to size. The extent to which the rolls approach each other, in diametrically contact ing the object under treatment may be positively limited by a suitable stop or an automatic roll-controlling mechanism may be set into operation when the article has been compressed to the dimensions whereupon further compressing of the ar ticle is arrested, thereby producing uniformity of dimensions, without requiring further tooling of the product.

When such articles drop forged a fin is usually produced, where the two parts of the die meet, thereby necessitating a further operation to removethe fin in finishing the article. v

In a practical embodiment of the invention, as shown in the drawings, the arrangement of the means for driving the rolls is such that they are caused to rotate in the same directionclockwise, for instance, as shown in Fig. 3so that their proximate surfaces are moving in opposite directions.

When stock of proper dimensions is placed between the rolls, or within the space around which the rolls are grouped, it is given a rotary motion by contact with the peripheries of the rolls, which rotates it in anti-clockwis or opposite direction; After required the rolls begin operation upon the enconr' The bodily movement of one or more of the rolls, in a substantially radial path, is continuousand effected by a means whereby substantially uniform pressure is constantly applied to the bodily movable roll at all points of its excursion. By using an hydraulic cylinder, in which the power medium is subjected to uniform pressnre,, an

automatic follow-up movement of the rolls toward each other is effected whereby a constant pressure is maintained and the rolls followup responsive to the decreasing diameter of the article being rolled.

In the exemplified showing. an hydraulic cylinder is disclosed as a means for radially moving oneor moreof the rolls. 7

The power medium therein should be subjected to an unvarying pressure to accomplish the result sought. There are a numher of equivalents for the aforesaid power means, such as steam, compressed air, springs, weights, etc., any equivalents of which may be substituted, although the hydraulic cylinder is the preferred means.

In describing the modified form of my invention I have used the same reference characters so far as expedient, difierentiating only by the addition of a letter exponent.

In Figs. 1 to 6 inclusive I have shown one embodiment of my invention, and in Figs. 1 and 9 I have shown a modification thereof. In the first exemplificationa single roll is bodily movable toward its companion roll. I In the second example the rolls are shown to mutually approach and recede from each other, to greater or less extent.

Both of these structures are simple and operable and are within contemplation of my invention.

12 and 13. The block 13 is provided, one on each of its ends with an upwardly-projecting curved bearing-bracket 14 and 15, providing boxes for a shaft 16. A bearing member '17 is pivoted on the shaft 16 and on its front end carries bearings 18 and 19 for the shaft 20. The shaft 20, at each end,

is provided with axial bearing-projections that may beintegral parts of the roll 21 or a shaft extending through the roll. Similar spaced-apart, relatively stationary, rotatable rolls 23 and 24 find bearings in the boxes 25 and 26, respectively, of the housing members 10 and 11. A stud 27, projects laterally from the bracket 14 and carries on its outer end a spur gear wheel 28. This gear wheel is for connection with a suitable source of power, (not shown) for driving the machine. Secured to the gear wheel 28 is a relatively small pinion 29, which is rotatable therewith upon the stud 27. The pinion 29 meshes with the spur gear wheel 30, which is secured to the axis of the'roll 24, as by a key 31'. Secured in a similar manner to the axisof the roll 23, as by a key 32, is a spur gear wheel 33, and secured to the axis of the compression roll 21, as by a key 34, is a spur-gear wheel v3 5. An intermediate spur gear 36 connects the spur gear wheel 30 with the projection or trunnion bearing 42 which are contained in slotted receptacles 43, provided in the base members 45, 46 of the housings 10 and 11, respectively. Transversely extending pins 44 pass through the members 45 and 46 of the respective housing members 10 and 11, and serve as trunnion hearings to accommodate the slight oscillatory movement of the cylinders 40 and 41. Each of the cylinders is provided with a piston 47, to each of which is secured a piston rod 48. Each of the piston rods is enlarged on its upper end, as at 49, which is received in an opening 50 provided in a downwardly projecting boss 51, from the pivoted bearing member 17. A pin 52 passes through the two-part boss and throu h the perforations in the upper end 49 of the piston rod 48. This structure serves as a means for uniformly raising and lowering both ends of the roll 21 and the bearing member 17 in which it is carried, upon the pivotal points, provided by the shaft 16, so that in whatever position the roll 21 may be the gear wheels 35 and 36 are never out of mesh.

In Fig. 8 I have shown an adjustable positive stop for the downward movement of the roll 21 provided by threading the piston rods 48, as at 148, and by placing a threaded adjustable collar 149 over this portion of the rod. This collar may be held in adujsted position by suitable means such. as a set screw 150. A bushing 151 is placed in the part 152 of the housing 10 and 11 and serves as a fixed abutment for the adjustable collar 149 so as to positively arrest the downward movement of the piston rods and hence the approach of the roll 21 toward its associate rolls, thereby to stop the effect of the rolls upon the object or article being rolled.

Another automatic stop may be effected by manipulation of the valve controlling the motive fluid supplied to the cylinders. The means for moving and stopping the movement of the roll consist-s of a conduit or pipe 56, for conveying a motive fluid under pressure, which is connected to the four-way valve casing 57. Cross pipes 58 are connected to the upper ends of the cylinders 40 and 41 and a cross pipe 49 is connected'to the lower ends of these cylinders. A branch pipe 60 connects the pipe 58 with one opening of the valve casing 57 and the branch pipe 61 connects the pipe 59 with one opening of the valve casing 57. Th

memes valve casing is provided with ports 62, 63, and 64, and with an exhaust port 65.

valve 67 is rovided with a handle 68 and is rotatable 1n the valve casing. Stops 60 and 7 0 limit the upper and lower movement of the handle 68. Vhen the motive fluid, from the pipe 56, is admitted into the valve casing, by the position of the valve, as shown in Fig.4, it will pass through the ports 62 and 64 into the pipe 59 and into, the cylinders 40 and 41 under the respective pistons 47, and liftthem, and through the instrumentality of'the connecting rods 48, the bearing member 17 which is carried upon the pivotal point, supplied by the shaft 60, and the roll 21. Now if the handle 68 be raised, so as to move the valve 67 into. substantially the position shown in Fig. 6, and the pipe 59 will thereby be made to communicate with the exhaust port 65, as: shown in Fig. 6, and the motivefluid under constant pressure, from the pipe 56 will pass through the port 62 and the port 63, into the pipe 58, and from thence into the cylinders 40 and 41, above the pistons 47 and cause the pistons to move downwardly, thereby to forcibly bring the compressing roll 21 down, into closer proximity with the relatively stationary rotatable rolls 23 and 24. The downward movement of the roll 21 will continue until the roll 21 occupies the desired position with the rolls 23 and 24, if not stopped before either by the positive stop 149 or by the fluid control means. In the latter example the valve 67 may be automatically or manually moved to stop the downward movement of the roll 21 by the following instrumentality:There is pivoted to the housing member 10, a lever 70, bifurcated at its forward end into prongs 71-71 which are slotted, as at 7 2. A sleeve 7 3 is adjustable upon one of the piston rods 48 and may be secured and fixed in any position, as by set screw 74. It is provided with laterally projecting, diametrically opposite studs 75-75, which passinto the slots 7272 of the bifurcated arms 71, thereby causing the outer free end of the lever 70 to travel with its associate piston rod 48. Pivoted at an intermediate point, on the lever 70, is a vertically disposed link 76, provided on its lower end with an elongated slot 77, through which passes a stud 78, which projects laterally from the valve operating lever 68. The slot 77 is about twice as long as the travel of the stud 78, to close the valve 67. Now referring to Fig. 4:upon the downward movement of the roll 21 the upper boundary of the slot 77, impinges upon the stud 7 8', which will move the handle 68 downwardly until the valve 67 has thus closed the port 62. This will occur just about the time that the pistons 47 have reached the lowermost positions in their respective cylinders. The operation of closing the valve, therefore, will stop the downward movement of the roll21'. Nowwhen the operator desires to lift the roll 21 he will move the valve 67, by the hand lever 68 into the position shown in Fig. 4, whereupon the motive fluid will pass from the pipe 56, through the valve and into the pipe 59,thereby raising the pist0ns147 in their respective cylinders. The pistons will continue on their upward movement until the bottom wall of the slot 77 in the link 76 contacts the stud 78 and raises the handle to a position where the valve 67 will once more close the port 62, thereby stopping the upward movement of the pistons 47. This will occur just about the time when the pistons 47 have reached the upper limit of movement in their respective cylinders. Now, when the operator desires to have the roll 21 descend, he will then raise the handle 68, into substanti ally the mid-position of the slot 7 7 as shown in Fig. 6, whereupon the mo,- tive fluid will pass from the pipe 56 into the pipe 58 and from thence into the respective cylinders on top of the pistons 47, thereby causing the pistons, and the roll 21, moved thereby, to move downwardly, as heretofore explained. The importance of the automatic operation just described is to have the downward movement of the compressing roll 21 automatically stopped, uniformly at the same position, so as to control the diameter of the object being rolled.

The sleeve 73 is adjustable upon the piston rod 48 so that the valve 67 may be automatically closed at any predetermined point in the downward movement of the piston, depending upon the altitude of the sleeve 7 3, upon the piston rod 48. When the valve handle 68 is moved by hand, after the valve has been closed by the operation of the machine, the stops 60 and 70 determine the proper position forthe hand lever, with respect to the valve 67 After the machine has closed the valve, in the manner described, the stud 78 on the handle 68 is at one or the other of the ends of the slot 7 7. whereupon the operator, to start the machine in the opposite direction, simply moves the handle 68 to the midway position of the slot 77, controllableby the stops 60 and 70, whereupon the pistons will be moved bythe motive fluid in the direction opposite to that in which they were moving when they were automatically stopped.

A liquid under constant pressure, such as water, or a fluid, such as air or the equivalent of either, may be employed as a power medium, the hydraulic means being preferred, for operating the pistons 47 within the respective cylinders. a

In Fig. 7 I have shown an exemplification of an article that may be made by the operation of my machine consisting of duplicate parts 80 and 81, which may be severed,

its

through the shank as at 82. It will be manifest, to persons skilled in the art, that very many other forms may be made on my machine, which are determined by the general configuration of the rolls.

While I have shown means for employing acpower fluid, hydraulic or the like, to move the rolls toward and from each other, it will be manifest, to persons skilled in the art, that other equivalent means or mechanical expedients .may'be. substituted within the contemplation of my invention.

Having described my invention, what I claim is 1. A machine of the character described having-in combinative association two parallel, spaced apart frame members to provide a housing; a spacing block between said members having near each of its ends an upwardly extending arm; a yoke, carrying a bodily movable roll, pivoted in said arms, two spaced apart. cooperating rolls supported insaid housing and means to raise and lower the bodily movable roll.

2. A machine of the character described having in combinative association two parallel, spaced apart frame members to provide a housing; a spacing block between said members having near each of its ends an arm extending upwardly above said members; a yoke, carrying a bodily movable roll, pivoted in said arms; two spaced apart cooperating rolls supported in said housing and a reciprocating motor connected to said yollie to raise and lower the bodily movable ro V 3. .A machine of the character described having in combinative association two parallel, spaced apart frame members to provide a housing; a spacing block between said members, having near each of its ends an arm extending upwardly above said members; a yoke, carrying a bodily movable roll pivoted in said arm; two spaced apart co operating rolls supported in said housing; means to drive said pair of rolls; a gear wheel rotatable about the axis of said yoke and another gear on said bodily movable roll and in mesh with the first mentioned gear wheel to drive said-bodily movable roll.

4. A machine of the character described having in combinative association two parallel spaced apart frame members to provide a housing; a spacing block between said members having near each of its ends an arm extending upwardly above said members; a yoke carrying a bodily movable roll, pivoted in said arms; two spaced apart cooperating rolls supported in said housing; means to drive said pair of rolls; a gear wheel rotatable about the axis of the said yoke; another gear wheel on the said bodily movable roll and in mesh with the first mentioned gear wheel to drive said bodily movable roll and a reciprocating motor to move said yokecarried roll from the pair of rolls.

5. A machine of the character described having in combinative association a pair of frame members provided with openings therein; a pair of oscillatable cylinders, one pivoted in each said opening; a pair of spaced apart rolls journaled in said frame members, above said cylinders; a yoke pivoted to the frame members; a roll, carried by the yoke, for cooperation with said pair of rolls; a piston rod extending upwardly through each frame member and connected to the respective ends of the yoke and means for simultaneously controlling the motive fluid admitted to said cylinders to move the yoke-carried roll toward and from said pair of rolls.

6. A machine of the character described having in combinative association a pair of frame members providing openings therein; a pair of oscillatable cylinders, one pivoted to its respective frame member in each said opening; a pair of spaced-apart rolls journaled in said members, above said cylinders; a yoke, pivoted to the frame members; a roll carried by the yoke, for cooperation with said pair of rolls; a piston rod extending upwardly through each frame member and connected to the respective ends of the yoke; means for simultaneously controlling the m0- vtive fluid admitted to said cylinders to move the yoke-carried roll toward and from said pair of rolls and a positive stop to limit the approach of the yoke carried roll toward the pair of rolls.

In testimony whereof I hereunto set my hand in the presence of two subscribing witnesses.

ARTHUR L. WARNER.

In the presence of-- G. H. LINDBURG, M. D. EKDAHL. 

